Manufacture of chair-seats.



A. J. BAUM. MANUFACTURE 0F CHAIR SEATS.

APPLICATION FILED N0.v.I9. I9I5.

1,224,891 Patented May 8, 191'7.

WITNESS.'

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ALBERT J'. BAUM, 0F NEW YORK, 1\T.

Y., assreivon To ALBERT WANNER, JR., or NEW YORK, N. Y.

MANUFACTURE OF CHAIR-SEATS.

Specication of Letters Patent.

Patented May 8, i917.

Application filed November 19, 1915. Serial No. 62,340.

This invention relates to the manufacture of chair seats and particularly to chair seats whose seats proper are composed of alreadywoven or so-called machine caning or other flexible sheet material, and it has for its object to simplify and reduce the cost of assembling the seats proper with their frames and to provide a. more durable and substantial seat than that which results from the method now commonly practised and consisting in routing or grooving one plane surface of the frame and binding the margin of the seat proper therein by the use of a strip of cane reed superimposed on such margin and jammed or wedged therewith into and cemented in such groove.

In the accompanying drawings,

Figure l is a plan view of the improved seat; and

Fig. 2 is a transverse sectional view thereof.

The ring or frame of a chair of the bentwood type is indicated at a., being as usual a suitable length of wood bent into continuous form and having its ends suitably joined together.

It is surmounted by thev ring-shaped portion e, which in the illustrated example is formed separately from frame a and is secured upon it by brads l; a rabbet b is produced, the portion e being of smaller diameter than that marked a.

c indicates the seat-proper, formed of any suitable iiexible sheet material, but in the present instance being illustrated as alreadywoven or machine eaning, The material of the seat-proper c is cut primarily to substantially the same contour as the portion e, though it is somewhat larger in diameter than the same.

d is a continuous ring or frame, formed of a suitable length of bent-wood having its ends suitably secured together; its crosserably of heavy wire, brought into registry therewith.

To form the seat, the material of the seatproper 0 is superimposed upon the portion e, whereupon the ring d being superimposed upon the marginal part of the seat-proper c the ring is forced downward over and around the portion e and the marginal portion of the seat-proper c, and the hoop or band 0 forced into place, seating directly in the groove of one member e--ol and pressing said marginal portion into the other groove, thus clamping the latter in place. When the parts have been thus established, ring d may be held by the brads 7 or other securing means, shown in Fig. 2 as driven vertically through the ring into the frame.

By forming seats in this manner, the seat proper is not only drawn to the desired degree of tautness without the employment of other means than parts of the seat itself, but once the joint is formed the seat proper is held with absolute security around its margin, remaining permanently uniformly taut in its whole area.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is:

l. The herein described chair seat including concentric endless frame members, a seat proper formed of a piece of flexible sheet material, said piece being extended over,

-and being in a substantially uniformly taut state as to the whole area of, the inner frame member and having its marginal part eX- tended between said frame members, and a hoop interposed between said members in concentric relation thereto and clamping the marginal part of said seat proper in place, said hoop having a continuous groove-interlock with each of said members.

2. The herein described chair seat including concentric endless frame members, a seat proper formed of a piece of iexible sheet material, said piece being extended over, gaging in one of said grooves and pressing and being in a substantially uniformly taut the marginal part of the seat proper into state as to the whole area of the inner frame the other groove and lthus interlocking. said 10 member and having its marginal part eX- members.

tended and continuously clamped between lln testimony whereof I alifix my signasaid frame members, vsaid members having ture. opposed continuous grooves, and a hoop en- ALBERT J. BAUM.

Copies of this patent may be obtained for ve cents each, by addressing the-Commissioner of Patents, Washington, D. C. 

